On my work PC it's painfully obvious that MS tracks every word you type into Teams and Outlook based on the clickbait shit they plaster all over the MSN homepage. It's always customized to include topics that were discussed in my work messages.
Nowhere in any of the Office365 land do you see a notification that they are analyzing everything you do, but it remains obvious that they are.
This leads to the reasonable conclusion that they will abuse your data for any avenue of profit.